Trolley-base.



W. J. PAUL.

TROLLEY BASE. APPLIoATIoN FILED SEPT. 19. 1912.

Patented Oct. 20, 1914.

Ill

lim

ERS CO.. PHDTULITHO.. WASHINGTON. D- C.

WILLIAM .'r. PAUI., OP EvERETT, MASSACHUSETTS, ASSIGNOE, vBY DIRECT ANDMESNE ASSIGNMENTS, 'To COUOH AND PAUL TROLLEY BASE COMPANY, or BOSTON,MASSA- CHUSETTS, A CORPORATION OEMASSACHUSETTS. n l

"TROLIiEr-BASE;v

To all whom t may concern: y

Be it known that I, WILLIAM J. PAUL, Citizen of the United tates,residing at Everett, county of Middlesex, State of Mas-y sachusetts,have invented a certain new and useful Improvemen kwhich the followingis a i i erence being had thereinfto `the accompany-` ing drawings. 4 fMy invention relates to a baseto support the trolleypole of an electriccar, in suoli a manner that ythe trolley will.` be yieldingly pressedagainst the underside of the trolley wire and may be capable offlateralmovement as required. Heretofore difliculty hasl beenv experiencedwithtrolley 4bases because the pressure exerted bythe Vtrolleyfon the,wire reacts on vthetrolley base `in suchkpa manner as tocausethef-partstocramp and bind and therefore to' 'wear out rapidly.

`A trolley base embodying my invention is so constructed that thepressure is transmittedv substantially symmetrically, the center ofpressure being aboutA in linewith the axis of rotation of the trolleystand. Thetrolley base is also constructed enter the bearings.

produced, inequalithat arcscribed a more lively trolleyis that is onewhich will follow any ties in the trolley wire quickly so ing is reducedto a minimum. f

A trolley base and `Stand embodying my invention is lightery than thoseheretofore constructed, and is exceedingly durable, refy vIt is yalso socon-k projects only alittle above' l quiring-little or no care.

structed that it l the top of the car, thereby requiring less bridges. i

"Theinvention will be understood from the following description taken"in connection with the accompanying i novel features thereof arepointed' out and clearlyvdened in` the'y claims at the close of thisspecification.

e Referring to the sideelevation 'of a trolley baseand stand embodyingmy invention. Fig. 2*is atop plan view of the device shown in Fig.- 1.Fig. 3' is a sectiony on line-#S Fig. 1.

` base which is secured At 11 is shown the i i by bolts to the'roof ofthecar. ySaid base Specification of Letters Patent. Applieation filed`September 19, 1912.

hollow cap 14 to which t ink Trolley-Bas`es', of

specification, refi y n .f

" lthrust bearingfor-said cap, while therolls stability. In

.f single piece.

so that rain cannot fully f ele--y head room in subways, carbarns andunder n :to the standl,

side ofthe spindle 12 kopposite to the trolley n "pole and at-fadrawings, and the from the cap 14, thus bringingthe connection betweensaid cam` and standfso vfarffrom Such yleverage movement ofthe stand yonits vertical pivot yor axis. Withthe cam 26 (which supports 25) thuspivf drawings, Figure l is a the' trolley Noted to the trolley stand 15at serial No. 721,225. s.;

hasy formed integral with ,it4 a spindle 12 ak around thekcircumferencel of which are placed vrollers 13 lforming a bearing forv a1s secured. yThe balls 16, interposed bee tweenl the'top of thespindle12 and the top of the-hollow cap "14, rafford an anti-friction ers`13,interposed between the sides Ofsaid from the cap at a'pointnear the basethereof, and mainly below the bearing aorded by the rollers 13, givesthe structure vgreat practice, Izfind it desirable to cast the cap cap14: onthe spindle 12 is takenby means ofuaseries of .balls 16 rrunningin a groove on the top of the spindle 12.k It will be seen 111I and thelmember 15 in Tliedownward thrust `of the n.

Patented Oct. 20, 191,4.

the trolley stand 15 i eo y* that'the'capf14f covers the working lpartsof 'the bearing ,n sothat yit is impossible'for rain to drivein andcausewcorrosion of the y l bearing". ,The'cap `lt'is `prevented fromjumping or being liftedL olf` bymeans vof two retaining screws 17, 17,whichproject into a groove 18 inthe Spindle 12. Theinterior of the"spindle isr preferably hollow as shown at 19, and there area series ofing through the wall so thatlthecavity 19 may 'be packed ywith grease'or vaseline, and

the y lubricant will gradually work through i the holes and keeptherollers lflubricated.v I

aid grease is conveniently inserted byremoving a plug 21 in the top ofthe cap 14.

` The trolley arm25 lis secured in the well known manner to one 26,'known in practice as the cam. Said cam 26'is pivoteld at its lower endasshown at 27 said pivot 27 being on the point lconsiderably removed thevertical axis of the stand as will insure as to afford i as nin aie turg holes l2O passf end of a bent member ioo` siderably removed from thevertical axis of p the cap 14, a the axis of nd thus at some distancefrom f movement of the said vtrolley y stand rigid or integral with saidcap, there is considerable do-wnward and lateral strain on said capwhich is well taken care of by the horizontal anti-friction bearing forsaid cap afforded by the balls 16 and by the ver# tical anti-frictionbearing for said cap adorded by the roller 13 and whichballs and rollersare interposed betweensaidcap and the hollow spindle 12.

The cam 26 is forked as is seen in Fig. 2, so that when the trolley armis pulled down it will not interfere with the cap 14. Therefore thetrolley pole may be depressed to a point below the level of the top ofthe cap. A. rod 2S located at an angle of the bent portion of the cam 26forms the means of engagement for the trolley springs 31, 32, 33 and311. rlhe other end of said springs is secured to the transverse portionof a T-shaped member 35, the longitudinal portion of -which is providedwith adjusting nuts 86 and 37 which engage a lug 3S von the end of thestand 15. rlhe two outside springs 31 and Bil are preferably made ofslightly coarser wire than the two inside springs 32 and 83 so that theinside springs are somee what longer, or contain more coils, than theoutside springs. This construction lis such that when the trolley wheelis depressed by Y a` low place in the wire the two outside springs 31and increase the force applied to the pole. It resultsfromthisconstruction 'that the trolley follows the wire better at highspeeds and arcing -is prevented. rlfhis construction results in what iscommonly termed a lively trolley, that is one which follows all theinequalities in the wire. At l0 is shown a stop with which the cam 2Gcontacts whenthe trolley leaves the wire.

By reference to Fig. 1 it will be seen that the cam 26 is so bent lorformed that one portion thereof is disposed at an obtuse angle to theother portion, forming an elbow, and that the rod 28, to which the pullsprings '31, 32, 53 and 3s are connected, is located at the angle of theelbow or rwhere the two bent portions meet. As this angle of the elbowis some distance above the pivot 277of the cam and trolley arm thestress of` the said springs is most advantageously applied so as tocontribute to the lively7 ac tion of the trollei as above referred to.In other words, while the pull of the springs is in a direction which ispractically at a right between said'l cap and the top angle to the lowerarm of the bent trolley cam, this pull is in a direction at an obtuseangle to the 'upper arm thereof. Also by having` the trolley standsecured to or eX tending from the tubular member or cap 14 near the basethereof a very stable construe tion is afforded.

That I claim is;

1. An improved trolley support consisting of the combination'with a basehaving an upwardly projecting hollow spindle provided with lateralopenings for the outward passage' of` a ,lubricantv contained in thechamber of said spindle, of a cap tting over said spindle and providedwith a trolley stand extending horizontally from a point near the baseof said cap and thus affording stability, a horizontal anti-frictionbearing of said spindle, a vertical anti-friction bearing between thesides of said cap 'and said spindle `and lubricated from the chamber ofthe latter, means for retaining said cap on said spindle, a trolley'campivoted to said trolley stand at a point whichis at a substantialdistance `from said cap and thus affording considerable leverage thestrain of whichis taken.v care of by said horizontal and vverticalbearings, and springs connecting said trolley cam with said trolleystand.

2. An improved troll-ey support consisting of the combination with abase having an upwardly projecting spindle of a cap tting over saidspindle andprovided with a trolley stand lextending horizontally from apoint near the base of said cap and thus affording stability, ahorizontal anti-friction bearing between said cap and the top of saidspindle, a vertical anti-friction bearing between the sides of said capand said spindle, means for retaining said cap on said spindle, atrolley cam pivoted to said trolley stand at a point removed from saidcap and thus affording considerable leverage the strain of which istaken care of by said horizontal and vertical bearings, and two sets ofsprings of dierent gage wire and unequal numbers of coils connectingsaid trolley cam with said trolley stand.v

ln testimony whereof l afX my signature, in presence of two witnesses. f

lVlLLlAM J. PAUL. e ellvlitnesses GEORGE P. Duin, Amon H. Morrison.

five cents each, by addressing the Commissioner of Patents,

Washington, D. C.

